wedi Subliner Dry Tileable Waterproofing Sheet Membrane is a premium, thin-layer waterproof and crack isolation underlayment that provides a secure, long-lasting foundation for tile installations in showers, wet rooms, bathrooms, kitchens, steam rooms, and other wet environments. This flexible waterproof sheet is 3' 3" wide and ideal for both wall and floor applications.

Crafted from highly tear-resistant polyethylene film and reinforced with a dual-sided fleece layer, wedi Subliner Dry offers excellent bonding strength to tile-setting materials while providing chemical resistance and long-term reliability. It’s engineered to prevent moisture infiltration and protect water-sensitive substrates, ensuring longevity of both residential and commercial tile installations.

Whether you're installing ceramic tile, porcelain, marble, granite, stone, or mosaics, this membrane helps prevent substrate movement, cracking, and delamination while keeping the installation height low. It integrates seamlessly with the full wedi waterproofing system, including sealing tape, inside and outside corner tapes, and sealing collars, which are sold separately.

Perfect for use over challenging substrates or as an additional layer of protection over traditional backer boards, wedi Subliner Dry is trusted by professionals and DIY remodelers alike for its ease of use, performance, and durability.

wedi is a family-owned German company that invented the original wedi Building Panel in 1983—the first inherently waterproof tile backer board. Today, wedi engineers complete waterproof shower and wet-room systems, including building panels, shower bases with integrated drainage, niches, curbs, sealants, and accessories designed to work together as a modular system. wedi manufactures in Germany and Batavia, Illinois, and backs its systems with a 10-year warranty (with longer coverage available for registered projects installed by wedi PRO certified installers).